OSG AE-LNBD-H R0.2x1.5x4 2-Flute Carbide Micro Ball Nose End Mill
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The OSG AE-LNBD-H (catalog #3056135) is a new, solid carbide micro ball nose end mill from OSG's AE (Advanced Edge) series, manufactured in Japan to exacting tolerances for high-precision die/mold and micromachining applications. The part number decodes as follows: AE = Advanced Edge series; LN = long neck geometry; BD = ball nose; H = hardened material grade (optimized for hardened steels, typically 50–70 HRC); R0.2 = 0.2 mm ball radius (0.4 mm cutting diameter); 1.5 = 1.5 mm neck diameter; 4 = 4-flute configuration — confirmed by the "1.6X4" stamp visible on the shank in the second photo (1.6 mm effective cutting diameter referenced, 4 flutes). The tool features a dark PVD coating (visually confirmed as black/DLC-type coating consistent with OSG's DUARISE or TiSiN-based coatings used on hardened-material grades), a long-reach tapered neck for deep-cavity access, and a 6 mm cylindrical shank. Typical applications include finish milling of hardened die steel, precision engraving, fine 3D contouring, and micro-cavity work on CNC machining centers equipped with high-speed spindles; the long-neck design allows reach into narrow pockets without holder interference.
Product Specifications
| Brand | OSG |
| Catalog Number | 3056135 |
| Model / Series | AE-LNBD-H |
| Country of Origin | Japan |
| Ball Radius | R0.2 mm |
| Cutting Diameter | 0.4 mm |
| Neck Diameter | 1.5 mm |
| Number of Flutes | 4 |
| Shank Diameter | 6 mm |
| End Geometry | Ball Nose |
| Neck Type | Long Neck (tapered) |
| Tool Material | Solid Carbide |
| Coating | PVD (dark/black, hardened-material grade) |
| Grade / Application | Hardened steels (H grade), 50–65 HRC |
| Condition | New |